gamnit :: GroupedSprites :: defaultinit
# Optimized `GroupedArray` to use `Sprite::context_index` and avoid using `index_of`
private class GroupedSprites
super GroupedArray[Sprite]
redef fun add(item)
do
var index = super
item.context_index = index
return index
end
redef fun remove(item) do remove_at(item, item.context_index)
end
lib/gamnit/flat/flat_core.nit:1718,1--1730,3